Tell me, isnt this against the law? I mean You're pumping some shitcoin, the ppl will think "holy shit! Its the next ethereum!" they will invest, price will go x-times more, and then your group will start to sell. You will gain but thousands of ppl will loose they money. This is smth similiar to stock manipulation. You should end up in jail.
This is something that usually happens why people needs to be adequately informed before making a decision as to which coin to invest in because that alt coin that is showing positive percentage increase might be getting to a peak for selling for those who made it get that high and actions like this will definitely affect new entrants into the market which might make them not come back until they get access to such information and the cycle continues.